Saving and loading the config for the ASI-EFW works fine for me. (7x36mm)
In you log I can not see that a config load is triggered.
Can you try to load the config via INDI Control Panel? ASI-EFW -> Options -> Configuration -> Load
Can you check what the setting in Kstars is? Settings -> Konfigure KStars -> Ekos -> General -> Configuartion -> Load Device Configuration - "On Connection"